/*
 * Copyright 2018 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/

package org.kie.workbench.common.services.refactoring.backend.server.indexing;

import java.util.Set;

import org.kie.workbench.common.services.refactoring.IndexElementsGenerator;
import org.uberfire.ext.metadata.model.KProperty;

@FunctionalInterface
public interface IndexBuilder {

    Set<KProperty<?>> build();

    /**
     * Optional operation.
     * @throws UnsupportedOperationException If not supported.
     */
    default IndexBuilder addGenerator(IndexElementsGenerator generator) {
        throw new UnsupportedOperationException();
    }

}
